1. highest frequency

The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.

22000Hz

Sony MDR-Z1R: 120000Hz

22000Hz

21000Hz

2. lowest frequency

The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.

16Hz

Sony MH1CBLK: 1Hz

18Hz

17Hz

3. has sound isolation/passive noise reduction

The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

45% have it

4. impedance

Impedance is the device’s electrical resistance to the current being pushed through it. The lower the impedance, the easier it is to get higher volume and requires less power.

28 Ohms

Flips Solo 2 Social: 4 Ohms

32 Ohms

20 Ohms

5. has a neodymium magnet

Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

33% have it

6. sound pressure level

Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

113dB/mW

AKG K553 Pro: 144dB/mW

112dB/mW

119dB/mW

7. no battery needed

This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

71% have it

8. has a tangle free cable

The cable is designed to minimize tangling.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

24% have it

9. has a detachable cable

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

39% have it

10. can be folded

Folding devices are good for transporting as they take up less space in your bag.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

32% have it

11. has an in-line control panel

There is a control panel on the cable, so you can easily operate the device without having to interact with it.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

45% have it

12. can be used as a headset

A headset is one headphone or pair with a built-in microphone. Headsets can be used for applications which require communication i.e. Skype, games with voice chat, mobile phones etc.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

40% have it

13. has stereo speakers

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

78% have it

14. has an over-the-ear form

Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.

15. has included ear pads

16. has a straight plug

A straight plug is better when the jack is on the top or bottom of your player.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

51% have it

17. travel bag is included

The device comes with its own special case or pouch, which is useful for safe transportation.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

63% have it

18. Can be used wirelessly

Wireless devices allow users more freedom of movement.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

19% have it

19. has an L-shaped plug

An L-shaped plug is better if the jack is on the left or right side of the device, so that the cable isn't bent, and is less likely to break when the device is in your pocket.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

31% have it

20. control panel placed on a device

There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

16% have it

21. has active noise canceling/noise reduction

This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

12% have it

22. has a 3.5mm male connector

A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

85% have it

23. cable length

A long cable ensures more freedom of movement.

1.4m

Pioneer SE-A1000: 6m

3m

1.2m

24. has a rechargeable battery

The battery can be recharged and used over again.

Sennheiser Momentum Wireless

AKG K99 Perception

Ultrasone IQ

12% have it

25. has a noise canceling microphone

These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.

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